ar71xx: drop target

This target has been mostly replaced by ath79 and won't be included
in the upcoming release anymore. Finally put it to rest.

This also removes all references in packages, tools, etc. as well as
the uboot-ar71xx and vsc73x5-ucode packages.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

package/system/mtd/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/kernel.mk
 
 PKG_NAME:=mtd
-PKG_RELEASE:=25
+PKG_RELEASE:=26
 
 PKG_BUILD_DIR := $(KERNEL_BUILD_DIR)/$(PKG_NAME)
 STAMP_PREPARED := $(STAMP_PREPARED)_$(call confvar,CONFIG_MTD_REDBOOT_PARTS)

package/system/mtd/src/Makefile

@@ -7,7 +7,6 @@ obj.seama = seama.o md5.o
 obj.wrg = wrg.o md5.o
 obj.wrgg = wrgg.o md5.o
 obj.tpl = tpl_ramips_recoveryflag.o
-obj.ar71xx = trx.o $(obj.seama) $(obj.wrgg)
 obj.ath79 = $(obj.seama) $(obj.wrgg)
 obj.gemini = $(obj.wrgg)
 obj.brcm = trx.o

package/system/mtd/src/trx.c

@@ -110,7 +110,6 @@ err:
 	return -1;
 }
 
-#ifndef target_ar71xx
 int
 trx_check(int imagefd, const char *mtd, char *buf, int *len)
 {
@@ -153,7 +152,6 @@ trx_check(int imagefd, const char *mtd, char *buf, int *len)
 	close(fd);
 	return 1;
 }
-#endif
 
 int
 mtd_fixtrx(const char *mtd, size_t offset, size_t data_size)